[St M.84L]                                                            [St M.84]							84
                                                                      
[upside down]                                                         [diagram]

upper
Shafts between 4th  & 5th  porch
	A	3  “  2 ½
	B	3  “  1
Interval at base
between shafts	            2  “  0
Basic sides		1  “  2
about

[diagram]  B   A

[Version 0.05: May 2008]